|Year|Host / Location|Division I Overall|Division I Undergraduate|Division II Overall|Division II Community College|
|---|---|---|---|---|---|
|1997|Penn|Chicago|N/A|N/A|N/A|
|1998|Vanderbilt|Stanford|Swarthmore|Harvard|N/A|
|1999|Michigan|Chicago|Carleton|Princeton|N/A|
|2000|Boston U|Illinois|Princeton|Harvard|N/A|
|2001|Washington, St. Louis|Chicago|Princeton|Pittsburgh|N/A|
|2002|North Carolina|Michigan|Princeton|Yale|Valencia CC|
|2003|UCLA and Caltech|Chicago|Harvard|Berkeley|Valencia CC|
|2004|Washington, St. Louis|Cal-Berkeley|Illinois|UCLA|Valencia CC|
|2005|Tulane|Michigan|VA Commonwealth|Chicago|Faulkner St CC|
|2006|Maryland|Cal-Berkeley|Williams College|Stanford|Broward CC|
|2007|Minnesota|Chicago|Carleton|Maryland|Valencia CC|
|2008|Washington, St. Louis|Maryland|Harvard|Carleton|Valencia CC|
|2009|Dallas, Texas|Chicago|Minnesota|Chicago|Northeast Alabama CC|
|2010|Chicago, Illinois|Chicago|Minnesota|Brown|St. Charles CC|
|2011|Chicago, Illinois|Minnesota|VCU|Yale|Chipola|
|2012|Chicago, Illinois|Virginia|Ohio State|Harvard|Chipola|
|2013|Chicago, Illinois|Yale|Ohio State|Stanford|Chipola|
|2014|Chicago, Illinois|Virginia|Yale|Harvard|Valencia|

Question: how many times is harvard listed on the chart?
Answer: 6